2 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $)
4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or (at
12 * your option) any later version.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #ifndef __ACPI_BUS_H__
27 #define __ACPI_BUS_H__
29 #include <linux/device.h>
31 #include <acpi/acpi.h>
33 /* TBD: Make dynamic */
34 #define ACPI_MAX_HANDLES 10
35 struct acpi_handle_list {
37 acpi_handle handles[ACPI_MAX_HANDLES];
42 acpi_extract_package(union acpi_object *package,
43 struct acpi_buffer *format, struct acpi_buffer *buffer);
45 acpi_evaluate_integer(acpi_handle handle,
47 struct acpi_object_list *arguments, unsigned long long *data);
49 acpi_evaluate_reference(acpi_handle handle,
51 struct acpi_object_list *arguments,
52 struct acpi_handle_list *list);
54 acpi_evaluate_hotplug_ost(acpi_handle handle, u32 source_event,
55 u32 status_code, struct acpi_buffer *status_buf);
58 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld);
61 #include <linux/proc_fs.h>
63 #define ACPI_BUS_FILE_ROOT "acpi"
64 extern struct proc_dir_entry *acpi_root_dir;
66 enum acpi_bus_removal_type {
67 ACPI_BUS_REMOVAL_NORMAL = 0,
68 ACPI_BUS_REMOVAL_EJECT,
69 ACPI_BUS_REMOVAL_SUPRISE,
70 ACPI_BUS_REMOVAL_TYPE_COUNT
73 enum acpi_bus_device_type {
74 ACPI_BUS_TYPE_DEVICE = 0,
76 ACPI_BUS_TYPE_PROCESSOR,
77 ACPI_BUS_TYPE_THERMAL,
78 ACPI_BUS_TYPE_POWER_BUTTON,
79 ACPI_BUS_TYPE_SLEEP_BUTTON,
80 ACPI_BUS_DEVICE_TYPE_COUNT
91 typedef int (*acpi_op_add) (struct acpi_device * device);
92 typedef int (*acpi_op_remove) (struct acpi_device * device, int type);
93 typedef int (*acpi_op_start) (struct acpi_device * device);
94 typedef int (*acpi_op_bind) (struct acpi_device * device);
95 typedef int (*acpi_op_unbind) (struct acpi_device * device);
96 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event);
103 struct acpi_device_ops {
105 acpi_op_remove remove;
108 acpi_op_unbind unbind;
109 acpi_op_notify notify;
112 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */
117 const struct acpi_device_id *ids; /* Supported Hardware IDs */
119 struct acpi_device_ops ops;
120 struct device_driver drv;
121 struct module *owner;
131 struct acpi_device_status {
136 u32 battery_present:1;
142 struct acpi_device_flags {
143 u32 dynamic_status:1;
147 u32 suprise_removal_ok:1;
148 u32 power_manageable:1;
149 u32 performance_manageable:1;
156 struct acpi_device_dir {
157 struct proc_dir_entry *entry;
160 #define acpi_device_dir(d) ((d)->dir.entry)
164 typedef char acpi_bus_id[8];
165 typedef unsigned long acpi_bus_address;
166 typedef char acpi_device_name[40];
167 typedef char acpi_device_class[20];
169 struct acpi_hardware_id {
170 struct list_head list;
174 struct acpi_device_pnp {
175 acpi_bus_id bus_id; /* Object name */
176 acpi_bus_address bus_address; /* _ADR */
177 char *unique_id; /* _UID */
178 struct list_head ids; /* _HID and _CIDs */
179 acpi_device_name device_name; /* Driver-determined */
180 acpi_device_class device_class; /* " */
181 union acpi_object *str_obj; /* unicode string for _STR method */
182 unsigned long sun; /* _SUN */
185 #define acpi_device_bid(d) ((d)->pnp.bus_id)
186 #define acpi_device_adr(d) ((d)->pnp.bus_address)
187 const char *acpi_device_hid(struct acpi_device *device);
188 #define acpi_device_name(d) ((d)->pnp.device_name)
189 #define acpi_device_class(d) ((d)->pnp.device_class)
191 /* Power Management */
193 struct acpi_device_power_flags {
194 u32 explicit_get:1; /* _PSC present? */
195 u32 power_resources:1; /* Power resources */
196 u32 inrush_current:1; /* Serialize Dx->D0 */
197 u32 power_removed:1; /* Optimize Dx->D0 */
201 struct acpi_device_power_state {
205 u8 explicit_set:1; /* _PSx present? */
208 int power; /* % Power (compared to D0) */
209 int latency; /* Dx->D0 time (microseconds) */
210 struct acpi_handle_list resources; /* Power resources referenced */
213 struct acpi_device_power {
214 int state; /* Current state */
215 struct acpi_device_power_flags flags;
216 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */
219 /* Performance Management */
221 struct acpi_device_perf_flags {
225 struct acpi_device_perf_state {
230 u8 power; /* % Power (compared to P0) */
231 u8 performance; /* % Performance ( " ) */
232 int latency; /* Px->P0 time (microseconds) */
235 struct acpi_device_perf {
237 struct acpi_device_perf_flags flags;
239 struct acpi_device_perf_state *states;
242 /* Wakeup Management */
243 struct acpi_device_wakeup_flags {
244 u8 valid:1; /* Can successfully enable wakeup? */
245 u8 run_wake:1; /* Run-Wake GPE devices */
246 u8 notifier_present:1; /* Wake-up notify handler has been installed */
249 struct acpi_device_wakeup {
250 acpi_handle gpe_device;
253 struct acpi_handle_list resources;
254 struct acpi_device_wakeup_flags flags;
258 struct acpi_device_physical_node {
260 struct list_head node;
264 /* set maximum of physical nodes to 32 for expansibility */
265 #define ACPI_MAX_PHYSICAL_NODE 32
270 acpi_handle handle; /* no handle for fixed hardware */
271 struct acpi_device *parent;
272 struct list_head children;
273 struct list_head node;
274 struct list_head wakeup_list;
275 struct acpi_device_status status;
276 struct acpi_device_flags flags;
277 struct acpi_device_pnp pnp;
278 struct acpi_device_power power;
279 struct acpi_device_wakeup wakeup;
280 struct acpi_device_perf performance;
281 struct acpi_device_dir dir;
282 struct acpi_device_ops ops;
283 struct acpi_driver *driver;
286 struct acpi_bus_ops bus_ops; /* workaround for different code path for hotplug */
287 enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
288 u8 physical_node_count;
289 struct list_head physical_node_list;
290 struct mutex physical_node_lock;
291 DECLARE_BITMAP(physical_node_id_bitmap, ACPI_MAX_PHYSICAL_NODE);
294 static inline void *acpi_driver_data(struct acpi_device *d)
296 return d->driver_data;
299 #define to_acpi_device(d) container_of(d, struct acpi_device, dev)
300 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv)
302 /* acpi_device.dev.bus == &acpi_bus_type */
303 extern struct bus_type acpi_bus_type;
310 struct acpi_bus_event {
311 struct list_head node;
312 acpi_device_class device_class;
318 struct acpi_eject_event {
323 extern struct kobject *acpi_kobj;
324 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
325 void acpi_bus_private_data_handler(acpi_handle, void *);
326 int acpi_bus_get_private_data(acpi_handle, void **);
327 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
328 extern int register_acpi_notifier(struct notifier_block *);
329 extern int unregister_acpi_notifier(struct notifier_block *);
331 extern int register_acpi_bus_notifier(struct notifier_block *nb);
332 extern void unregister_acpi_bus_notifier(struct notifier_block *nb);
337 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device);
338 void acpi_bus_data_handler(acpi_handle handle, void *context);
339 acpi_status acpi_bus_get_status_handle(acpi_handle handle,
340 unsigned long long *sta);
341 int acpi_bus_get_status(struct acpi_device *device);
342 int acpi_bus_set_power(acpi_handle handle, int state);
343 int acpi_device_set_power(struct acpi_device *device, int state);
344 int acpi_bus_update_power(acpi_handle handle, int *state_p);
345 bool acpi_bus_power_manageable(acpi_handle handle);
346 bool acpi_bus_can_wakeup(acpi_handle handle);
347 int acpi_power_resource_register_device(struct device *dev, acpi_handle handle);
348 void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle);
349 #ifdef CONFIG_ACPI_PROC_EVENT
350 int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data);
351 int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data);
352 int acpi_bus_receive_event(struct acpi_bus_event *event);
354 static inline int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
357 int acpi_bus_register_driver(struct acpi_driver *driver);
358 void acpi_bus_unregister_driver(struct acpi_driver *driver);
359 int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent,
360 acpi_handle handle, int type);
361 void acpi_bus_hot_remove_device(void *context);
362 int acpi_bus_trim(struct acpi_device *start, int rmdevice);
363 int acpi_bus_start(struct acpi_device *device);
364 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd);
365 int acpi_match_device_ids(struct acpi_device *device,
366 const struct acpi_device_id *ids);
367 int acpi_create_dir(struct acpi_device *);
368 void acpi_remove_dir(struct acpi_device *);
372 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver
373 * @__acpi_driver: acpi_driver struct
375 * Helper macro for ACPI drivers which do not do anything special in module
376 * init/exit. This eliminates a lot of boilerplate. Each module may only
377 * use this macro once, and calling it replaces module_init() and module_exit()
379 #define module_acpi_driver(__acpi_driver) \
380 module_driver(__acpi_driver, acpi_bus_register_driver, \
381 acpi_bus_unregister_driver)
384 * Bind physical devices with ACPI devices
386 struct acpi_bus_type {
387 struct list_head list;
388 struct bus_type *bus;
389 /* For general devices under the bus */
390 int (*find_device) (struct device *, acpi_handle *);
391 /* For bridges, such as PCI root bridge, IDE controller */
392 int (*find_bridge) (struct device *, acpi_handle *);
394 int register_acpi_bus_type(struct acpi_bus_type *);
395 int unregister_acpi_bus_type(struct acpi_bus_type *);
397 struct acpi_pci_root {
398 struct list_head node;
399 struct acpi_device * device;
400 struct acpi_pci_id id;
403 struct resource secondary; /* downstream bus range */
405 u32 osc_support_set; /* _OSC state of support bits */
406 u32 osc_control_set; /* _OSC state of control bits */
407 phys_addr_t mcfg_addr;
411 acpi_handle acpi_get_child(acpi_handle, u64);
412 int acpi_is_root_bridge(acpi_handle);
413 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
414 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
415 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
417 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
418 int acpi_disable_wakeup_device_power(struct acpi_device *dev);
421 acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
422 acpi_notify_handler handler, void *context);
423 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
424 acpi_notify_handler handler);
425 int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
426 u32 target_state, int d_max_in, int *d_min_p);
427 int acpi_pm_device_sleep_state(struct device *, int *, int);
429 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,
430 acpi_notify_handler handler,
435 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
436 acpi_notify_handler handler)
440 static inline int __acpi_device_power_state(int m, int *p)
444 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
446 static inline int acpi_device_power_state(struct device *dev,
447 struct acpi_device *adev,
448 u32 target_state, int d_max_in,
451 return __acpi_device_power_state(d_max_in, d_min_p);
453 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
455 return __acpi_device_power_state(m, p);
459 #ifdef CONFIG_PM_RUNTIME
460 int __acpi_device_run_wake(struct acpi_device *, bool);
461 int acpi_pm_device_run_wake(struct device *, bool);
463 static inline int __acpi_device_run_wake(struct acpi_device *adev, bool en)
467 static inline int acpi_pm_device_run_wake(struct device *dev, bool enable)
473 #ifdef CONFIG_PM_SLEEP
474 int __acpi_device_sleep_wake(struct acpi_device *, u32, bool);
475 int acpi_pm_device_sleep_wake(struct device *, bool);
477 static inline int __acpi_device_sleep_wake(struct acpi_device *adev,
478 u32 target_state, bool enable)
482 static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
488 #ifdef CONFIG_ACPI_SLEEP
489 u32 acpi_target_system_state(void);
491 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; }
494 static inline bool acpi_device_power_manageable(struct acpi_device *adev)
496 return adev->flags.power_manageable;
499 static inline bool acpi_device_can_wakeup(struct acpi_device *adev)
501 return adev->wakeup.flags.valid;
504 static inline bool acpi_device_can_poweroff(struct acpi_device *adev)
506 return adev->power.states[ACPI_STATE_D3_COLD].flags.os_accessible;
509 #else /* CONFIG_ACPI */
511 static inline int register_acpi_bus_type(void *bus) { return 0; }
512 static inline int unregister_acpi_bus_type(void *bus) { return 0; }
514 #endif /* CONFIG_ACPI */
516 #endif /*__ACPI_BUS_H__*/